From bba3691da44c8c526228e672455a279e681c8af6 Mon Sep 17 00:00:00 2001
From: BilalWalker <bilalwalker687@gmail.com>
Date: Mon, 12 Oct 2026 15:19:24 +0500
Subject: [PATCH] Add TypeScript declaration for the queueMicrotask global

React Native installs queueMicrotask on every app (setUpTimers.js), but
src/types/globals.d.ts never declared it. TypeScript users without the DOM
lib hit "Cannot find name 'queueMicrotask'".

Declare it next to the other timer globals and cover it in the globals
type test.
---
 .../react-native/__typetests__/globals.tsx     | 18 ++++++++++++++++++
 packages/react-native/src/types/globals.d.ts   |  1 +
 2 files changed, 19 insertions(+)

diff --git a/packages/react-native/__typetests__/globals.tsx b/packages/react-native/__typetests__/globals.tsx
index 1776431bedd1..69b6255eefd8 100644
--- a/packages/react-native/__typetests__/globals.tsx
+++ b/packages/react-native/__typetests__/globals.tsx
@@ -145,6 +145,24 @@ function testRequestAnimationFrame(){
     );
 }
 
+function testQueueMicrotask() {
+    const result: void = queueMicrotask(noop);
+    console.log(result);
+
+    queueMicrotask(() => {
+        console.log('microtask');
+    });
+
+    // @ts-expect-error
+    queueMicrotask();
+
+    // @ts-expect-error
+    queueMicrotask('wrong-type');
+
+    // @ts-expect-error
+    queueMicrotask(noop, 'extra-arg');
+}
+
 function testRequestIdleCallback() {
     cancelIdleCallback(null);
     cancelIdleCallback(undefined);
diff --git a/packages/react-native/src/types/globals.d.ts b/packages/react-native/src/types/globals.d.ts
index 2e5bf77c5786..e1a67d68ac75 100644
--- a/packages/react-native/src/types/globals.d.ts
+++ b/packages/react-native/src/types/globals.d.ts
@@ -184,6 +184,7 @@ declare global {
     handler: (...args: Args) => void,
     ...args: Args
   ): number;
+  function queueMicrotask(callback: () => void): void;
 
   function cancelAnimationFrame(handle: number | null | undefined): void;
   function requestAnimationFrame(callback: (time: number) => void): number;